Every little but helps and it is very time consuming to floss with braces on. I have received great feedback from hygienist of referring dentists, so I purchased an air floss unit for myself.
After one week of use, I give it an enthusiastic thumbs up! Technique is important and the tip should be aimed directly between the teeth and gum line. I use mouthwash rather than water and peroxide can be substituted as well.
It is definitely worth the investment. Especially if you or your child have braces.
Dr. David McSurdy